Asked if he Flacco would be on top of the depth chart for the rest of the way, Stefanski gave the obvious answer after such a clutch performance: "Yes."
"Played well," Stefanski said regarding Flacco. "You expect him to get better as he gets more comfortable in our system with our players, those type of things. But we just talked about him and all our guys, doing their job, giving us their best, and I thought that's what he did."
Flacco got Sunday's game started off with a six-play, 75-yard scoring drive highlighted by a 34-yard touchdown pass to a wide-open David Njoku.
Three punts followed, but thanks to a Cleveland's defense piecing together a first-quarter shutout, the Browns had the opportunity to go up two scores on their first possession of the second quarter, which again ended with a 30-plus-yard strike from Flacco to Njoku.
That was the theme of the game for the Browns, who often came alive in spurts under Flacco and were able to hold on against a late surge by the comeback-minded Jags.
"It was definitely an ugly game," Flacco told CBS' Evan Washburn. "Mistakes on both sides. Definitely didn't play the cleanest game on my end, but I have a feeling that's the way this team kind of likes it. They really react well in times like that. Listen, I've been here for a couple weeks, and I've been watching them on TV for the last bit, and that's kind of what I've seen. Hey, we'll take them any way we can get them."
The Browns new QB1 looked for the team's WR1 on 14 different occasions, six more than any other pass catcher, and the duo turned that into seven catches for 77 yards.
Once the smoke cleared, the Browns moved to 8-5, Flacco became the fourth Cleveland QB this season to earn a win and Cleveland's offense finished with 389 total yards -- its most since Week 2.
It all bodes well for Cleveland, which is now in the AFC's No. 5 seed with a full-game margin over multiple teams after the Steelers, Colts and Texans all fell.
In the past three weeks, Flacco has put back on an NFL uniform off the couch, twice been elevated from the practice squad to play and once reverted back to the practice squad.
He won't be leaving the active roster now.
More importantly to the Browns' chances this season, the wily veteran has 16 years of experience and a Super Bowl MVP on his resume as he looks to guide Cleveland to the playoffs and beyond.
"So many times where I was just feeling like a 10-year-old kid again," he said after the win. "And to be able to do that, you just can't let it be lost on you how special it is to play this game."